In reply to estivoautumnal:
> If I were to buy a new van and have it converted to a mobile filming/editing unit with sleeping/cooking/shower facilities
You can buy "welfare units" now with all these facilities. I bet these are claimed at 100%.
Tell the taxman that it is cheaper than using hotels so less expenses and more tax to be paid.
I did that on my second tax investigation and the inspector agreed immediately
I have sacked off two accountants and had two tax investigations straight after ( ?!),
Started a long explanation letter of why I claimed for two ( banger ) vehicles, got bored so just scrawled " no car no work no tax " in capitals across the page and signed it. Got a letter by return "we accept your figures.. blah blah .
clean bill of health on both which I remind the HMRC if they query any returns, again always does the trick.